100 ! brainliest if

a mixture is a physical combination of two or more different substances, regardless of how much you have of each. mixtures can be separated using physical means. that is, chemical reactions are not necessary to separate the different mixed-up components. for example, let's say you have a mixture of 100 iron-rich magnetic particles and 100 grains of table salt. come up with at least three different ways to separate the particles and grains. hint: think of some of the physical properties of these substances.

The other answer contains the most common methods so the ones below are kind of un-usual:

1. Centrifuge - it is a machine that spins things around in circles. As salt and iron have different densities, they will separate.

2. Pass the mixture in an electric field - a force will be exerted on the magnetic particles when they move through an electric field and changed their paths. Salt particles will pass straight through.

3. Heat the mixture up - iron has a higher melting point. So the salt particles will melt first.

the equation that correctly represent the reaction for formation of ammonia is

n2+ 3h2 → 2nh3 (answer d)

1 mole of nitrogen gas (n2) react with 3 moles of hydrogen gas (h2) to form 2 moles of ammonia ( nh3). this is in a process known as haber process were iron is used as a catalyst and reaction take place that a higher temperature and pressure. the process is exothermic hence energy is released.

in the given question, the partial pressure is calculated by using the ideal gas equation, that is, pv = nrt

here, p is pressure, v is volume = 25 l, n is number of moles = 0.0104 moles, r is gas constant = -0.0821 l.atm / mol.k

t is temperature = 273 k

p = nrt / v

p = (0.0104 mol × 0.0821 l.atm / mol.k × 273 k) / 25 l

= 0.0093 atm